Starting Test Mode / Selecting Adjustment Test Mode; Panel Board Test Mode - Brother PR600 Service Manual

Test mode
Starting test mode
Hold down the [START/STOP], [THREAD CUT], and [THREAD GUIDE] buttons and turn the [POWER]
switch on.
The screen shown below appears. Select [PANEL BOARD TEST MODE].
When [PANEL BOARD TEST MODE] is selected, the menus shown below are displayed.
Menu descriptions
1. Switch test
Select this mode to check whether the three push buttons are operating correctly.
The button on the screen turns red while the actual button is held down.
2. LED test
Select this mode to check whether the LED lights correctly.
Pressing [On red LED] lights the LED red. (The LED remains lit until [Off LED] is pressed.)
Pressing [On green LED] lights the LED green. (The LED remains lit until [Off LED] is pressed.)
Pressing [Off LED] turns the LED off.
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Panel board test mode